[Webpack] Module not found: Error: Can't resolve 'vertx' in '/home/user/app/node_modules/plotly.js/dist'

Error with plotly.js 1.35.1 and webpack 3.11.0 when importing: import Plotly from 'plotly.js/dist/plotly-with-meta'

./node_modules/plotly.js/dist/plotly-with-meta.js
Module not found: Error: Can't resolve 'vertx' in '/home/user/app/node_modules/plotly.js/dist'
 @ ./node_modules/plotly.js/dist/plotly-with-meta.js 61621:16-26
 @ ./src/entryPoint.js
 @ multi ./src/entryPoint.js webpack-hot-middleware/client?path=http://localhost:3000/__webpack_hmr

[domehead100]

The error is from the es6 promise shim. Discussed here #100 and here #305.

I had to add

new webpack.IgnorePlugin(/vertx/)

to my plugins to squelch the warning. Other things mentioned in the two discussions did not work. I’m still on webpack 3.10 and started getting this when updating to plotly.js 1.35.2 a few days ago.

[brussee]

Just to confirm: this is showing up as a warning, and compilation proceeds, right?

Yes, webpack presents it as a warning and is able to complete the compilation.